// Copyright 2007-2017 Chris Patterson, Dru Sellers, Travis Smith, et. al.
//  
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the 
// License at 
// 
//     http://www.apache.org/licenses/LICENSE-2.0 
// 
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
// specific language governing permissions and limitations under the License.
namespace MassTransit.Topology.Conventions.CorrelationId
{
    using System;
    using Context;
    using Context.SetCorrelationIds;
    using Internals.Extensions;


    public class CorrelatedByCorrelationIdSelector<T> :
        ICorrelationIdSelector<T>
        where T : class
    {
        public bool TryGetSetCorrelationId(out ISetCorrelationId<T> setCorrelationId)
        {
            var correlatedByInterface = typeof(T).GetInterface<CorrelatedBy<Guid>>();
            if (correlatedByInterface != null)
            {
                var objectType = typeof(CorrelatedBySetCorrelationId<>).MakeGenericType(typeof(T));
                setCorrelationId = (ISetCorrelationId<T>)Activator.CreateInstance(objectType);
                return true;
            }

            setCorrelationId = null;
            return false;
        }
    }
}